Once you have a query, you can do more with it than just iterating the results in a for loop.
Setup:
from datetime import date
class User(Base):
__tablename__ = 'users'
id = Column(Integer, primary_key=True)
name = Column(Text, nullable=False)
birthday = Column(Date)
# ...
Create a 2x3 matrix. Each row is a comma-separated list of elements. Rows are separated by a semicolon.
A = [1, 2, 3; 4, 5, 6]
# A =
#
# 1 2 3
# 4 5 6
Sum of two matrices
B = [1, 1, 1; 1, 1, 1]
# B =
#
# 1 1 1
# 1 1 1
A+B
# ans =
#
# 2 3 4
# ...
Atlassian SourceTree is a visual tool for Mac and Windows to manage source code repositories. This can be used with Codecommit as a remote repository but need to add an extra configuration option to the local repository in SourceTree to be able to connect with codecommit.
First, setup Codecommit fo...
At it's most basic level, acceptance testing is essentially black-box testing, which is fundamentally concerned with testing inputs and outputs of a closed system. As such, there are three essential features to acceptance testing: locating a resource, reading data, and writing data. When it comes to...
First, we need a custom endpoint builder.
public class WSConfigurator extends ServerEndpointConfig.Configurator {
@Inject
private static Injector injector;
@Override
public <T> T getEndpointInstance(Class<T> endpointClass)
throws InstantiationException
{
...
A Sample class diagram based on which we will see JPA implementation.
@Entity
@Table(name = "VEHICLE")
@Inheritance(strategy = InheritanceType.JOINED)
@DiscriminatorColumn(name = "VEHICLE_TYPE")
public abstract class Vehicle {
@TableGenerator(name = "VEHICLE_GE...
To make an app more cohesive, we often need to keep user's personal settings and preferences consistent across multiple devices that have been logged in with one Microsoft account. In this sample, we use roaming data to store and to load UI settings, game process and user info. But the roaming data ...
Create an HTML file with the following content:
<!DOCTYPE html>
<html>
<head>
<title>Angular Interceptor Sample</title>
<script src="https://code.angularjs.org/1.5.8/angular.min.js"></script>
<script src="app.js"></sc...
Xamarins built in gesture recognizers provide only very basic touch handling. E.g. there is no way to get the position of a touching finger.
MR.Gestures is a component which adds 14 different touch handling events. The position of the touching fingers is part of the EventArgs passed to all MR.Gestu...
Imagine the following XML:
<root>
<element foobar="hello_world" />
<element example="this is one!" />
</root>
/root/element[@foobar]
and will return the <element foobar="hello_world" /> element.
Imagine the following XML:
<root>
<element foobar="hello_world" />
<element example="this is one!" />
</root>
The following XPath expression:
/root/element[@foobar = 'hello_world']
will return the <element foobar="hello_world&quo...
Assuming that you are running redis server on localhost you can type command
redis-cli
After this command appear redis command line prompt
127.0.0.1:6379>
How do you handle errors, rather then log them to the console?
Bad way:
Router.route('/')
.get((req, res) => {
Request.find((err, r) => {
if(err){
console.log(err)
} else {
res.json(r)
}
})
})
.post((req, res) => {
const reque...
When sending a notification to an iOS device, you must set priority: "high" for it to wake up. Otherwise, the notification will not be received while the phone is asleep.
Sets the priority of the message. Valid values are "normal" and "high." On iOS, these correspond...
var renderer = Platform.GetRenderer(visualElement);
if (renderer == null)
{
renderer = Platform.CreateRenderer(visualElement);
Platform.SetRenderer(visualElement, renderer);
}
DoSomeThingWithRender(render); // now you can do whatever you want with render
mongodump --db mydb --gzip --out "mydb.dump.$(date +%F_%R)"
This command will dump a bson gzipped archive of your local mongod 'mydb' database to the 'mydb.dump.{timestamp}' directory
